R. Augarde

Observatoire de la Côte d’Azur

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H. Maehara

National Astronomical Observatory of Japan

G. Comte

Université Claude Bernard Lyon 1

P. Figon

D. Kunth

Institut d'Astrophysique de Paris

A. Chalabaev

Centre National de la Recherche Scientifique

J. Lequeux

EDP Sciences

K. Cananzi

Observatoire de la Côte d’Azur

M. Hamabe

Japan Women's University

L. Gouguenheim

Observatoire de Paris

L. Bottinelli

Centre National de la Recherche Scientifique

Cooperative Institutions

Centre National de la Recherche Scientifique

Observatoire de Paris

Galaxies, Etoiles, Physique et Instrumentation

Institut d'Astrophysique de Paris

Instituto de Astrofísica de Andalucía

Laboratoire d’Astrophysique de Marseille

National Astronomical Observatory of Japan

Aix-Marseille Université

Observatoire Midi-Pyrénées

European Southern Observatory

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Spectrographic study of a large sample of KISO ultraviolet excess galaxies. I. The data

Astronomy & Astrophysics Supplement Series (1994)

R. Augarde A. Chalabaev G. Comte D. Kunth H. Maehara

We present the results of a medium-resolution spectroscopic study of 142 Kiso ultraviolet-excess galaxies (KUGs), mostly of compact, irregular and interactive pair morphological types in the Kiso catalog. 137 objects are found to exhibit at least one emission line. The astrophysical implications of this survey will be discussed in a companion paper (Comte et al. 1994)

Ultraviolet

Line (geometry)

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An atlas of Balmer lines (H-delta and H--gamma).

Astronomy & Astrophysics Supplement Series (1993)

K. Cananzi R. Augarde J. Lequeux

We obtained spectra for 70 stars of spectral types O to G and luminosity classes V, III, and I. They are in the blue between 4000 and 4500 A at a resolution of ≃ 2 A. Our aim is to derive pure equivalent widths of Hδ and Hγ using a Voigt profile fitting and to plot them as a function of the spectral type. Our results are compared to theoretical ones issued from the last models of Kurucz. Moreover, we have measured equivalent widths of blended hydrogen lines, as it is generally the case in the litterature, and collated them to those compiled by Tinsley from several authors and those derived by Lennon et al. for supergiant stars. These equivalent widths are useful for stellar classification and population synthesis of galaxies (paper II)

Balmer series

Stellar population

Equivalent width

Hertzsprung–Russell diagram

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Spectroscopic survey of the Case blue and emission line galaxies.

Astronomy and Astrophysics (1987)

R. Augarde P. Figon D. Kunth F. Sèvre

Line (geometry)

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Spectroscopy and photometry of a large sample of Kiso ultraviolet-excess galaxies

Annales de Physique (1991)

R. Augarde G. Comte A. Chalabaev D. Kunth H. Maehara

Optical spectrophotometry has been obtained for 141 Kiso ultraviolet excess galaxies, mostly of compact morphology. In addition, 44 objects have been imaged in B, R, and I colors. The dominant characteristic of the sample is a moderate to strong starburst activity (spectra of thermally photoionized interstellar gas), often coupled with radiative shocks which could trace violent dynamical events (close encounters, collisions, mergings). Only three objects appear as fair AGN candidates. The photometry reveals a large variance in the true morphology, with every possible combinations of standard surface brightness distributions (r 1/4 and exponential laws). Some fresh mergers are suspected. A provisional calibration of the uv-excess in the Kiso catalogue is given in terms of B-R color. The signification of the compact morphology is briefly discussed

Ultraviolet

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A study of the KUG 2259+157 group of galaxies.

Annales de Physique (1991)

L. Bottinelli L. Gouguenheim W.D. van Driel Paul Goudfrooij M. A. T. Groenewegen

We have studied optical B, V, R, I, and Hα CCD images and high- and low- resolution long-slit spectra, 21 cm HI line observations made with radio-synthesis and single-dish telescopes, 6 and 20 cm radio continuum maps, and far-infrared observations of 6 members of the KUG 2259+157 group of galaxies : NGC 7448, the compact subgroup NGC 7463-64-65 (=KUG 2259+157), UGC 12313 and 12321. We find clear evidence for an extended cloud of about 5×10 9 M ⊙ whose centre appears to be located nearby to the north-west of UGC 12321, with an average velocity of some 1950 km s −1 , which is close to that of UGC 12313. The data also indicate a systematic motion of the cloud. The clearest signs of interaction in the group are the optical characteristics of NGC 7464 and NGC 7465, which indicate that these are actively star forming merging systems, consistent with their gas-rich nature and peculiar HI distribution and kinematics. The detached large low-surface density cloud in the vicinity of UGC 12321 may also have a tidal origin

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Peculiar motions and star formation in the interacting galaxy complex Mk 171=NGC 3690+IC 694

Astronomy and Astrophysics (1985)

R. Augarde J. Lequeux

On a combine des observations spectroscopiques dans le visible et dans l'UV lointain a d'autres informations existantes pour interpreter les proprietes de la formation stellaire exceptionnellement active dans Mk 171. On montre que ce systeme correspond a l'interaction et probablement a la collision directe de deux galaxies, avec une masse totale ≤4.10 10 M ○.

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Spectral synthesis of spectral populations using Balmer lines

Space Science Reviews (1994)

K. Cananzi R. Augarde J. Lequeux

Balmer series

Spectral Analysis

Planetary science

10.1007/bf00771049

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Distribution of gas and star-forming regions in MK 171 : three galaxies ?

Astronomy and Astrophysics (1989)

F. Casoli F. Combes R. Augarde P. Figon J. M. Martin

Une cartographie des raies (1-0) et (2-1) du monoxyde de carbone du systeme de galaxies coalescentes de Mk 171, une nouvelle observation spectroscopique de la raie Hα et le spectre de HI sont presentes. La carte de CO (2-1) montre trois sources compactes, dont deux sont identifiees comme les noyaux des galaxies IC 694 et NGC 3690. La troisieme source pourrait etre le noyau d'une troisieme galaxie

Galactic nuclei

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Kiso UV-excess galaxies: a large sample of active galaxies.

Annales de Physique (1991)

H. Maehara R. Augarde L. Bottinelli G. Comte L. Gouguenheim

A comprehensive study of Kiso UV-excess galaxies is presented on the basis of their spectroscopic, photometric, radio, and infrared observations. The luminosity and spatial distribution of the galaxies are derived from the data as well as physical properties of individual objects. It is shown that they probably constitue a subsample of field galaxies in the starburst phase. The Kiso survey collects efficiently active galaxies of various morphological types and luminosity classes. The important part of this work has been done using Japanese and French telescopes under the collaborative research program between France and Japan. We present in this paper the general aspect of our project including the survey work, in addition to papers by Comte et al. and Bottinelli et al. in this Proceedings

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Hickson 96: a physical compact group ?

Astronomy and Astrophysics (1997)

L. Verdes–Montenegro A. del Olmo J. Perea E. Athanassoula I. Márquez

We analyze the morphology and dynamics of the galaxies of the Hickson 96 compact group by means of deep CCD images in the B, V and R photometric bands and long{slit spectroscopy. The four galaxies of this spiral rich group show signs of gravitational interaction. Two long tails come out from the con- tact region of the close pair H96ac. It is also there where both galaxies, bi-symmetrical in their inner parts, loose one of their arms. Moreover, both the photometric and kinematical center of H96a are displaced relative to the center of the disk. H96b, a giant elliptical galaxy, shows signicant deviations from a r 1=4 law at the inner parts and small rotation along its ma- jor axis. We nd at the centre of the galaxy an elongated com- ponent which is kinematically decoupled. A wide faint plume seems to emerge from this galaxy. H96d, the smallest galaxy of the group, seems to be influenced by the bigger members, as indicated by three prominent knots of recent bursts of star for- mation in its blue disk, and by hints of optical bridges joining H96d with H96a and b. Finallythegrouphasalowvelocitydispersion(160 km s 1 ) and is well isolated - no galaxies with comparable magnitude to H96a or H96b are found in its neighborhood. All these results lead us to conclude that Hickson 96 constitutes a real physical system.

Peculiar galaxy

Center (category theory)

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